./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:12:56,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:12:56,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:12:56,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:12:56,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:12:56,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:12:56,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:12:56,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:12:56,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:12:56,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:12:56,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:12:56,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:12:56,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:12:56,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:12:56,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:12:56,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:12:56,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:12:56,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:12:56,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:12:56,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:12:56,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:12:56,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:12:56,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:12:56,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:12:56,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:12:56,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:12:56,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:12:56,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:12:56,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:12:56,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:12:56,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:12:56,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:12:56,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:12:56,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:12:56,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:12:56,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:12:56,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:12:56,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:12:56,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:12:56,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:12:56,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:12:56,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:12:56,551 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:12:56,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:12:56,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:12:56,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:12:56,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:12:56,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:12:56,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:12:56,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:12:56,555 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:12:56,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:12:56,556 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:12:56,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:12:56,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:12:56,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:12:56,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:12:56,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:12:56,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:12:56,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:12:56,557 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:12:56,557 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:12:56,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:12:56,558 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:12:56,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:12:56,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:12:56,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:12:56,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:12:56,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:12:56,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:12:56,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:12:56,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:12:56,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:12:56,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:12:56,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:12:56,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:12:56,561 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:12:56,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:12:56,561 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:12:56,561 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:12:56,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:12:56,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:12:56,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:12:56,892 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:12:56,892 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:12:56,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-09-01 06:12:58,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:12:58,389 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:12:58,394 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-09-01 06:12:58,415 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61846d34a/778140023eb845c5ac5860e0d7d78f37/FLAGc3270e9ba [2023-09-01 06:12:58,435 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61846d34a/778140023eb845c5ac5860e0d7d78f37 [2023-09-01 06:12:58,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:12:58,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:12:58,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:12:58,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:12:58,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:12:58,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:12:58" (1/1) ... [2023-09-01 06:12:58,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d2de38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:58, skipping insertion in model container [2023-09-01 06:12:58,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:12:58" (1/1) ... [2023-09-01 06:12:58,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:12:58,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:12:59,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:12:59,102 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:12:59,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:12:59,253 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:12:59,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59 WrapperNode [2023-09-01 06:12:59,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:12:59,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:12:59,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:12:59,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:12:59,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,323 INFO L138 Inliner]: procedures = 365, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2023-09-01 06:12:59,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:12:59,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:12:59,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:12:59,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:12:59,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,364 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:12:59,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:12:59,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:12:59,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:12:59,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (1/1) ... [2023-09-01 06:12:59,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:12:59,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:12:59,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:12:59,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:12:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:12:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:12:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:12:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:12:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:12:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 06:12:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:12:59,447 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:12:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:12:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:12:59,449 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:12:59,626 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:12:59,628 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:12:59,778 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:12:59,784 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:12:59,784 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 06:12:59,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:12:59 BoogieIcfgContainer [2023-09-01 06:12:59,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:12:59,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:12:59,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:12:59,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:12:59,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:12:58" (1/3) ... [2023-09-01 06:12:59,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ddcaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:12:59, skipping insertion in model container [2023-09-01 06:12:59,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:12:59" (2/3) ... [2023-09-01 06:12:59,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ddcaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:12:59, skipping insertion in model container [2023-09-01 06:12:59,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:12:59" (3/3) ... [2023-09-01 06:12:59,793 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2023-09-01 06:12:59,801 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:12:59,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:12:59,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 06:12:59,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:12:59,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:12:59,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 63 transitions, 131 flow [2023-09-01 06:12:59,913 INFO L130 PetriNetUnfolder]: 0/62 cut-off events. [2023-09-01 06:12:59,914 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:59,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 06:12:59,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 63 transitions, 131 flow [2023-09-01 06:12:59,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 127 flow [2023-09-01 06:12:59,923 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:12:59,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 62 transitions, 127 flow [2023-09-01 06:12:59,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 62 transitions, 127 flow [2023-09-01 06:12:59,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62 transitions, 127 flow [2023-09-01 06:12:59,951 INFO L130 PetriNetUnfolder]: 0/62 cut-off events. [2023-09-01 06:12:59,951 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:12:59,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 06:12:59,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 874 [2023-09-01 06:13:01,935 INFO L134 LiptonReduction]: Checked pairs total: 1235 [2023-09-01 06:13:01,936 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-09-01 06:13:01,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:13:01,955 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@592f43c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:13:01,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-09-01 06:13:01,958 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-09-01 06:13:01,958 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:01,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:01,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 06:13:01,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:01,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash 7180286, now seen corresponding path program 1 times [2023-09-01 06:13:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:01,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144345427] [2023-09-01 06:13:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144345427] [2023-09-01 06:13:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144345427] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:02,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:02,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203043519] [2023-09-01 06:13:02,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:02,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:02,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 119 [2023-09-01 06:13:02,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 31 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:02,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:02,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 119 [2023-09-01 06:13:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:02,778 INFO L130 PetriNetUnfolder]: 31/76 cut-off events. [2023-09-01 06:13:02,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:02,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 76 events. 31/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 246 event pairs, 3 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 148. Up to 44 conditions per place. [2023-09-01 06:13:02,781 INFO L137 encePairwiseOnDemand]: 114/119 looper letters, 19 selfloop transitions, 5 changer transitions 4/28 dead transitions. [2023-09-01 06:13:02,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 28 transitions, 115 flow [2023-09-01 06:13:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:13:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:13:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-09-01 06:13:02,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2023-09-01 06:13:02,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-09-01 06:13:02,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-09-01 06:13:02,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:02,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-09-01 06:13:02,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:02,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:02,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:02,806 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 31 flow. Second operand 4 states and 245 transitions. [2023-09-01 06:13:02,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 28 transitions, 115 flow [2023-09-01 06:13:02,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:02,808 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 54 flow [2023-09-01 06:13:02,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-09-01 06:13:02,814 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-09-01 06:13:02,815 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 54 flow [2023-09-01 06:13:02,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:02,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:02,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 06:13:02,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:13:02,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:02,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash 7180291, now seen corresponding path program 1 times [2023-09-01 06:13:02,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:02,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583800232] [2023-09-01 06:13:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:02,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:03,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:03,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583800232] [2023-09-01 06:13:03,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583800232] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:03,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:03,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313453331] [2023-09-01 06:13:03,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:03,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:03,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:03,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 119 [2023-09-01 06:13:03,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:03,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 119 [2023-09-01 06:13:03,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:03,211 INFO L130 PetriNetUnfolder]: 22/58 cut-off events. [2023-09-01 06:13:03,212 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 06:13:03,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 58 events. 22/58 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 180 event pairs, 2 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 142. Up to 35 conditions per place. [2023-09-01 06:13:03,214 INFO L137 encePairwiseOnDemand]: 114/119 looper letters, 18 selfloop transitions, 5 changer transitions 2/25 dead transitions. [2023-09-01 06:13:03,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 25 transitions, 122 flow [2023-09-01 06:13:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:13:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:13:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2023-09-01 06:13:03,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084033613445378 [2023-09-01 06:13:03,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 242 transitions. [2023-09-01 06:13:03,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 242 transitions. [2023-09-01 06:13:03,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:03,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 242 transitions. [2023-09-01 06:13:03,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,226 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,226 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 54 flow. Second operand 4 states and 242 transitions. [2023-09-01 06:13:03,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 25 transitions, 122 flow [2023-09-01 06:13:03,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:03,228 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 65 flow [2023-09-01 06:13:03,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=65, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-09-01 06:13:03,229 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 7 predicate places. [2023-09-01 06:13:03,229 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 65 flow [2023-09-01 06:13:03,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:03,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 06:13:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:13:03,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:03,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash 7180371, now seen corresponding path program 1 times [2023-09-01 06:13:03,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:03,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655197111] [2023-09-01 06:13:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:03,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:03,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655197111] [2023-09-01 06:13:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655197111] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:03,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:03,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:03,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304987671] [2023-09-01 06:13:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:03,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:03,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:03,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 119 [2023-09-01 06:13:03,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:03,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 119 [2023-09-01 06:13:03,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:03,577 INFO L130 PetriNetUnfolder]: 19/52 cut-off events. [2023-09-01 06:13:03,577 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 06:13:03,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 52 events. 19/52 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 151 event pairs, 3 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 138. Up to 34 conditions per place. [2023-09-01 06:13:03,579 INFO L137 encePairwiseOnDemand]: 114/119 looper letters, 15 selfloop transitions, 6 changer transitions 2/23 dead transitions. [2023-09-01 06:13:03,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 137 flow [2023-09-01 06:13:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:13:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:13:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2023-09-01 06:13:03,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021008403361344 [2023-09-01 06:13:03,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 239 transitions. [2023-09-01 06:13:03,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 239 transitions. [2023-09-01 06:13:03,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:03,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 239 transitions. [2023-09-01 06:13:03,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,584 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,584 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 65 flow. Second operand 4 states and 239 transitions. [2023-09-01 06:13:03,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 137 flow [2023-09-01 06:13:03,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 123 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 06:13:03,587 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 85 flow [2023-09-01 06:13:03,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-09-01 06:13:03,588 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places. [2023-09-01 06:13:03,588 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 85 flow [2023-09-01 06:13:03,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:03,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 06:13:03,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:13:03,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:03,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash 7180389, now seen corresponding path program 1 times [2023-09-01 06:13:03,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883472450] [2023-09-01 06:13:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:03,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:03,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:03,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883472450] [2023-09-01 06:13:03,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883472450] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:03,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:03,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:03,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601903109] [2023-09-01 06:13:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:03,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:03,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:03,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 119 [2023-09-01 06:13:03,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:03,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 119 [2023-09-01 06:13:03,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:03,820 INFO L130 PetriNetUnfolder]: 16/46 cut-off events. [2023-09-01 06:13:03,821 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 06:13:03,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 46 events. 16/46 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 121 event pairs, 4 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 133. Up to 33 conditions per place. [2023-09-01 06:13:03,822 INFO L137 encePairwiseOnDemand]: 114/119 looper letters, 14 selfloop transitions, 6 changer transitions 2/22 dead transitions. [2023-09-01 06:13:03,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 142 flow [2023-09-01 06:13:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:13:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:13:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2023-09-01 06:13:03,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-09-01 06:13:03,823 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 238 transitions. [2023-09-01 06:13:03,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 238 transitions. [2023-09-01 06:13:03,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:03,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 238 transitions. [2023-09-01 06:13:03,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,826 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 85 flow. Second operand 4 states and 238 transitions. [2023-09-01 06:13:03,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 142 flow [2023-09-01 06:13:03,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:03,828 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 98 flow [2023-09-01 06:13:03,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-09-01 06:13:03,829 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 12 predicate places. [2023-09-01 06:13:03,829 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 98 flow [2023-09-01 06:13:03,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:03,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:03,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:03,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:13:03,830 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:03,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -839865490, now seen corresponding path program 1 times [2023-09-01 06:13:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:03,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600188582] [2023-09-01 06:13:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:04,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600188582] [2023-09-01 06:13:04,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600188582] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:04,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:04,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:13:04,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188996101] [2023-09-01 06:13:04,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:04,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:04,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:04,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:04,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 119 [2023-09-01 06:13:04,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:04,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 119 [2023-09-01 06:13:04,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:04,086 INFO L130 PetriNetUnfolder]: 12/46 cut-off events. [2023-09-01 06:13:04,086 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-09-01 06:13:04,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 46 events. 12/46 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 148 event pairs, 2 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 138. Up to 24 conditions per place. [2023-09-01 06:13:04,087 INFO L137 encePairwiseOnDemand]: 114/119 looper letters, 19 selfloop transitions, 5 changer transitions 1/25 dead transitions. [2023-09-01 06:13:04,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 170 flow [2023-09-01 06:13:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:13:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:13:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2023-09-01 06:13:04,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021008403361344 [2023-09-01 06:13:04,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 239 transitions. [2023-09-01 06:13:04,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 239 transitions. [2023-09-01 06:13:04,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:04,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 239 transitions. [2023-09-01 06:13:04,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,091 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,091 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 98 flow. Second operand 4 states and 239 transitions. [2023-09-01 06:13:04,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 170 flow [2023-09-01 06:13:04,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 06:13:04,093 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 108 flow [2023-09-01 06:13:04,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-09-01 06:13:04,094 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 13 predicate places. [2023-09-01 06:13:04,094 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 108 flow [2023-09-01 06:13:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:04,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:04,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:13:04,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:04,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash -837703240, now seen corresponding path program 2 times [2023-09-01 06:13:04,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:04,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128013015] [2023-09-01 06:13:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:04,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:04,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128013015] [2023-09-01 06:13:04,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128013015] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:04,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:04,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:13:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550466774] [2023-09-01 06:13:04,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:13:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:13:04,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:13:04,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 119 [2023-09-01 06:13:04,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:04,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 119 [2023-09-01 06:13:04,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:04,329 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-09-01 06:13:04,330 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 06:13:04,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 18 events. 0/18 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 27 event pairs, 0 based on Foata normal form. 3/21 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2023-09-01 06:13:04,330 INFO L137 encePairwiseOnDemand]: 116/119 looper letters, 13 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2023-09-01 06:13:04,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 119 flow [2023-09-01 06:13:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-09-01 06:13:04,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2023-09-01 06:13:04,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-09-01 06:13:04,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-09-01 06:13:04,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:04,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-09-01 06:13:04,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,334 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 108 flow. Second operand 3 states and 177 transitions. [2023-09-01 06:13:04,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 119 flow [2023-09-01 06:13:04,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 16 transitions, 109 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 06:13:04,336 INFO L231 Difference]: Finished difference. Result has 31 places, 16 transitions, 90 flow [2023-09-01 06:13:04,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2023-09-01 06:13:04,337 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 13 predicate places. [2023-09-01 06:13:04,337 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 90 flow [2023-09-01 06:13:04,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:04,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:13:04,338 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:04,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash -199279778, now seen corresponding path program 1 times [2023-09-01 06:13:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431216577] [2023-09-01 06:13:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:04,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:04,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431216577] [2023-09-01 06:13:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431216577] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:04,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:04,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:13:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574517609] [2023-09-01 06:13:04,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:04,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 06:13:04,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 06:13:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 06:13:04,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2023-09-01 06:13:04,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:04,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2023-09-01 06:13:04,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:04,911 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-09-01 06:13:04,912 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 06:13:04,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 17 events. 0/17 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 21 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-09-01 06:13:04,912 INFO L137 encePairwiseOnDemand]: 112/119 looper letters, 8 selfloop transitions, 7 changer transitions 2/17 dead transitions. [2023-09-01 06:13:04,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 17 transitions, 124 flow [2023-09-01 06:13:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 06:13:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 06:13:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 402 transitions. [2023-09-01 06:13:04,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222689075630252 [2023-09-01 06:13:04,920 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 402 transitions. [2023-09-01 06:13:04,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 402 transitions. [2023-09-01 06:13:04,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:04,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 402 transitions. [2023-09-01 06:13:04,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 50.25) internal successors, (402), 8 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,923 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,923 INFO L175 Difference]: Start difference. First operand has 31 places, 16 transitions, 90 flow. Second operand 8 states and 402 transitions. [2023-09-01 06:13:04,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 17 transitions, 124 flow [2023-09-01 06:13:04,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 17 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 06:13:04,925 INFO L231 Difference]: Finished difference. Result has 34 places, 15 transitions, 92 flow [2023-09-01 06:13:04,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=15} [2023-09-01 06:13:04,925 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 16 predicate places. [2023-09-01 06:13:04,926 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 15 transitions, 92 flow [2023-09-01 06:13:04,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:04,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:04,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:04,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:13:04,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:04,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash -273493884, now seen corresponding path program 1 times [2023-09-01 06:13:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:04,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937292458] [2023-09-01 06:13:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:04,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937292458] [2023-09-01 06:13:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937292458] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:05,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:05,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:13:05,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257343102] [2023-09-01 06:13:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:05,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 06:13:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 06:13:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 06:13:05,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 119 [2023-09-01 06:13:05,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 15 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:05,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 119 [2023-09-01 06:13:05,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:05,348 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 06:13:05,349 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-09-01 06:13:05,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 15 events. 0/15 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-09-01 06:13:05,349 INFO L137 encePairwiseOnDemand]: 112/119 looper letters, 6 selfloop transitions, 8 changer transitions 1/15 dead transitions. [2023-09-01 06:13:05,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 15 transitions, 120 flow [2023-09-01 06:13:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 06:13:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 06:13:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 486 transitions. [2023-09-01 06:13:05,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084033613445378 [2023-09-01 06:13:05,351 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 486 transitions. [2023-09-01 06:13:05,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 486 transitions. [2023-09-01 06:13:05,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:05,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 486 transitions. [2023-09-01 06:13:05,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 48.6) internal successors, (486), 10 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,355 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,355 INFO L175 Difference]: Start difference. First operand has 34 places, 15 transitions, 92 flow. Second operand 10 states and 486 transitions. [2023-09-01 06:13:05,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 15 transitions, 120 flow [2023-09-01 06:13:05,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 15 transitions, 95 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-09-01 06:13:05,357 INFO L231 Difference]: Finished difference. Result has 34 places, 14 transitions, 79 flow [2023-09-01 06:13:05,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=79, PETRI_PLACES=34, PETRI_TRANSITIONS=14} [2023-09-01 06:13:05,358 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 16 predicate places. [2023-09-01 06:13:05,358 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 14 transitions, 79 flow [2023-09-01 06:13:05,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:05,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:05,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:13:05,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:05,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:05,359 INFO L85 PathProgramCache]: Analyzing trace with hash -273493866, now seen corresponding path program 1 times [2023-09-01 06:13:05,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:05,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126546434] [2023-09-01 06:13:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:05,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:05,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:05,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126546434] [2023-09-01 06:13:05,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126546434] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:05,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:05,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:13:05,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448029557] [2023-09-01 06:13:05,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:05,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 06:13:05,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:05,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 06:13:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 06:13:05,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 119 [2023-09-01 06:13:05,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 14 transitions, 79 flow. Second operand has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:05,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 119 [2023-09-01 06:13:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:05,895 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-09-01 06:13:05,895 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-09-01 06:13:05,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 13 events. 0/13 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-09-01 06:13:05,896 INFO L137 encePairwiseOnDemand]: 111/119 looper letters, 5 selfloop transitions, 3 changer transitions 5/13 dead transitions. [2023-09-01 06:13:05,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 13 transitions, 101 flow [2023-09-01 06:13:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 06:13:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 06:13:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 419 transitions. [2023-09-01 06:13:05,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912231559290383 [2023-09-01 06:13:05,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 419 transitions. [2023-09-01 06:13:05,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 419 transitions. [2023-09-01 06:13:05,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:05,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 419 transitions. [2023-09-01 06:13:05,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,901 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,902 INFO L175 Difference]: Start difference. First operand has 34 places, 14 transitions, 79 flow. Second operand 9 states and 419 transitions. [2023-09-01 06:13:05,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 13 transitions, 101 flow [2023-09-01 06:13:05,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 13 transitions, 84 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 06:13:05,903 INFO L231 Difference]: Finished difference. Result has 32 places, 8 transitions, 39 flow [2023-09-01 06:13:05,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39, PETRI_PLACES=32, PETRI_TRANSITIONS=8} [2023-09-01 06:13:05,903 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 14 predicate places. [2023-09-01 06:13:05,903 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 8 transitions, 39 flow [2023-09-01 06:13:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:05,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:05,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:05,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:13:05,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 06:13:05,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:05,905 INFO L85 PathProgramCache]: Analyzing trace with hash -199279783, now seen corresponding path program 1 times [2023-09-01 06:13:05,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:05,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097868295] [2023-09-01 06:13:05,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:05,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:06,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:06,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097868295] [2023-09-01 06:13:06,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097868295] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:06,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:06,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:13:06,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628983556] [2023-09-01 06:13:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 06:13:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 06:13:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 06:13:06,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 119 [2023-09-01 06:13:06,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 8 transitions, 39 flow. Second operand has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:06,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:06,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 119 [2023-09-01 06:13:06,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:06,265 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-09-01 06:13:06,266 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:13:06,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 7 events. 0/7 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-09-01 06:13:06,266 INFO L137 encePairwiseOnDemand]: 113/119 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-09-01 06:13:06,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 7 transitions, 49 flow [2023-09-01 06:13:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:13:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:13:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 290 transitions. [2023-09-01 06:13:06,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061624649859944 [2023-09-01 06:13:06,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 290 transitions. [2023-09-01 06:13:06,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 290 transitions. [2023-09-01 06:13:06,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:06,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 290 transitions. [2023-09-01 06:13:06,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:06,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:06,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:06,271 INFO L175 Difference]: Start difference. First operand has 32 places, 8 transitions, 39 flow. Second operand 6 states and 290 transitions. [2023-09-01 06:13:06,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 7 transitions, 49 flow [2023-09-01 06:13:06,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 7 transitions, 36 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 06:13:06,271 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-09-01 06:13:06,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-09-01 06:13:06,272 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-09-01 06:13:06,272 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-09-01 06:13:06,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:06,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-09-01 06:13:06,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-09-01 06:13:06,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-09-01 06:13:06,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2023-09-01 06:13:06,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-09-01 06:13:06,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-09-01 06:13:06,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-09-01 06:13:06,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:13:06,276 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:06,281 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 06:13:06,281 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 06:13:06,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 06:13:06 BasicIcfg [2023-09-01 06:13:06,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 06:13:06,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 06:13:06,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 06:13:06,284 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 06:13:06,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:12:59" (3/4) ... [2023-09-01 06:13:06,287 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 06:13:06,292 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-09-01 06:13:06,295 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-09-01 06:13:06,296 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 06:13:06,296 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 06:13:06,320 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 06:13:06,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 06:13:06,321 INFO L158 Benchmark]: Toolchain (without parser) took 7882.65ms. Allocated memory was 71.3MB in the beginning and 167.8MB in the end (delta: 96.5MB). Free memory was 47.4MB in the beginning and 92.3MB in the end (delta: -44.9MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2023-09-01 06:13:06,321 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 06:13:06,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 814.93ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 45.1MB in the end (delta: 2.0MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2023-09-01 06:13:06,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.56ms. Allocated memory is still 71.3MB. Free memory was 45.1MB in the beginning and 42.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:13:06,322 INFO L158 Benchmark]: Boogie Preprocessor took 51.55ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:13:06,322 INFO L158 Benchmark]: RCFGBuilder took 409.00ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 40.8MB in the beginning and 63.7MB in the end (delta: -22.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2023-09-01 06:13:06,322 INFO L158 Benchmark]: TraceAbstraction took 6496.07ms. Allocated memory was 90.2MB in the beginning and 167.8MB in the end (delta: 77.6MB). Free memory was 62.7MB in the beginning and 95.4MB in the end (delta: -32.7MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2023-09-01 06:13:06,323 INFO L158 Benchmark]: Witness Printer took 36.03ms. Allocated memory is still 167.8MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:13:06,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 814.93ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 45.1MB in the end (delta: 2.0MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.56ms. Allocated memory is still 71.3MB. Free memory was 45.1MB in the beginning and 42.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.55ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.00ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 40.8MB in the beginning and 63.7MB in the end (delta: -22.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6496.07ms. Allocated memory was 90.2MB in the beginning and 167.8MB in the end (delta: 77.6MB). Free memory was 62.7MB in the beginning and 95.4MB in the end (delta: -32.7MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * Witness Printer took 36.03ms. Allocated memory is still 167.8MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 66 PlacesBefore, 18 PlacesAfterwards, 62 TransitionsBefore, 14 TransitionsAfterwards, 874 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 56 TotalNumberOfCompositions, 1235 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 855, independent: 771, independent conditional: 0, independent unconditional: 771, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 497, independent: 478, independent conditional: 0, independent unconditional: 478, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 855, independent: 293, independent conditional: 0, independent unconditional: 293, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 497, unknown conditional: 0, unknown unconditional: 497] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1235]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1235]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1235]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1235]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 85 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 832 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 553 mSDsluCounter, 565 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 442 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1319 IncrementalHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 123 mSDtfsCounter, 1319 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=5, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 06:13:06,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE